2x^2 + 7x + 3 factors into (2x + 1)(x + 3).
What is factoring?
The factoring approach can be used if the quadratic polynomial can be divided into two linear factors:
Look for two numbers that add up to b and multiply to c.
With these numbers, rewrite the quadratic polynomial as the sum of two terms.
Choose the term that has the most in common with each group of terms.
Remove the common binomial factor between the two groups.
Take the quadratic polynomial 2x2 + 7x + 3, for instance. We must choose two values that sum up to seven and multiply by three in order to factor this polynomial. These are the numbers 3 and 1. The quadratic can then be rewritten as follows:
2x² + 3x + 4x + 3
Then, for each collection of terms, we factor out the term with the highest common factor:
x(2x + 3) + 1(4x + 3)
Lastly, we remove the common binomial factor between the two groups:
(2x + 1)(x + 3)
As a result, 2x2 + 7x + 3 equals (2x + 1)(x + 3).
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Help ive been stuck on this for a while
The length of Diagonal is 14.73 unit.
What is Prism?A three-dimensional solid object called a prism has two identical ends. It consists of equal cross-sections, flat faces, and identical bases. Without bases, the prism's faces are parallelograms or rectangles.
Given:
l = 9, w= 10 and h= 6
The Formula for Diagonal length of Prism is:
d =√l² + w² + h²
Here, d = length of the diagonal, l = length of the rectangular base of the prism, w = width of the rectangular base of the prism, and h = height of the prism.
Substitute the value in the equation,
d =√9² + 10² + 6²
d =√81+ 100 + 36
d = √217
d = 14.73 units
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MRNW is a kite, mRMN=5x-15, mR=11+45, nWNM=10y+30, and mW=8y
As per the given angle the value of x makes MRNW a kite is 6.66 degrees
Now, let's use the information given to us to find the value of x that makes MRNW a kite. We know that the angle ∠RMN is 5x - 15, and we know that the angle ∠R is 11x + 45. Since MR and RN are equal in length, we know that ∠RMN and ∠R are adjacent angles in a straight line. This means that their sum is equal to 180 degrees.
So, we can write an equation:
(5x - 15) + (11x + 45) = 180
Simplifying this equation, we get:
16x + 30 = 180
Subtracting 30 from both sides, we get:
16x = 150
Dividing both sides by 16, we get:
x = 9.375
To do this, we need to find the values of the other two angles in the kite. We know that the angle ∠WNM is 10y + 30, and we know that the angle ∠W is 8y.
So, we can write another equation:
(10y + 30) + (8y) = 180
Simplifying this equation, we get:
18y + 30 = 180
Subtracting 30 from both sides, we get:
18y = 150
Dividing both sides by 18, we get:
y = 8.333
Now, we need to check if these values of x and y make MRNW a kite. We can calculate the angles ∠M and ∠N using the information we have:
∠M = 180 - ∠RMN - ∠R
∠M = 180 - (5x - 15) - (11x + 45)
∠M = 150 - 16x
∠M = 7.5 degrees
∠N = 180 - ∠WNM - ∠W
∠N = 180 - (10y + 30) - (8y)
∠N = 142 - 18y
∠N = 6.666 degrees
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Complete Question;
Use the given figure to answer questions 4-6. MRNW is a kite. ∠RMN = 5x - 15, ∠R = 11x + 45, ∠WNM = 10y + 30, and ∠W = 8y. 4. What value of x makes MRNW a kite?
What is the slope of the line that passes through the points ( 4 , − 6 ) and ( − 2 , 3)
Answer:
m = -3/2
Step-by-step explanation:
Slope = rise/run or (y2 - y1) / (x2 - x1)
Points (4, − 6) and (− 2, 3)
We see the y increase by 9 and the x decrease by 6, so the slope is
m = - 9/6 = -3/2
So, the slope of the line is -3/2
i choose 10 consecutive numbers. if i exclude one of the numbers the remaining 9 sum to 2023 which number did i exclude?
The number that was excluded from the 10 consecutive numbers would be = 228.
How to calculate the number that was excluded?Let's take the smallest number of the 10 consecutive number to be = X
Then, the 10 consecutive numbers are x, x+1, x+2, x+3, x+4, x+5, x+6, x+7, x+8, and x+9.
If we exclude one of these numbers, then the sum of the remaining 9 numbers would be:
(x) + (x+1) + (x+2) + (x+3) + (x+4) + (x+5) + (x+6) + (x+7) + (x+8)
Collect the like terms and add up.
= 9x + 36
Recall that the sum of the remaining 9 numbers = 2023.
That is:
= 9X + 36 = 2023
=9x = 1987
x = 221
Therefore, the smallest number in the consecutive sequence is 221, and the 10 numbers are 221, 222, 223, 224, 225, 226, 227, 228, 229, and 230.
If we exclude the number 228, then the sum of the remaining 9 numbers is 2023.
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Make sure to do all the steps because there is a Part A, Part B, & a Part C
Answer: 54 cups of sugar
Step-by-step explanation:
part A add 3 each time
1=3
2=6
3=9
4=12
5=15
6=18
Part B
1x3 per pie
so if there is 70 pies do 70x3
Part C]
if you do 18 and since you need 3 cups of sugar per pie
do 18 times 3 to get a total of 54 cups of sugar
18x3=54
Please helpppp I need this really really bad
The given exponential functions are classified as exponential growth or exponential decay above.
What is function?A function is a relation between a dependent and independent variable. We can write the examples of functions as -
y = f(x) = ax + b
y = f(x, y, z) = ax + by + cz
Given is to check whether the given functions represent exponential growth or decay.
We can write the classified functions as -
{ 1 }. y = 500(0.30)ˣ exponential decay
{ 2 }. y = 500(1.70)ˣ exponential growth
{ 3 }. y = 0.3(500)ˣ exponential growth
{ 4 }. y = 500(0.30)ˣ - 6 exponential decay
{ 5 }. y = 0.3(1.7)ˣ - 2 exponential growth
{ 6 }. y = 500(0.30)ˣ ⁺ ⁸ exponential growth
{ 4 }. y = 500(0.30)ˣ ⁻ ⁶ exponential decay
Therefore, the given exponential functions are classified as exponential growth or exponential decay above.
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2) How many widgets (to the nearest tenth) can be produced by 360 workers in 20 hours?
Assuming a constant rate of production, 360 workers can produce approximately 7200 widgets in 20 hours.
The problem asks how many widgets can be produced by 360 workers in 20 hours. To solve this problem, we need to use the formula:
widgets = rate x time x workers
We know the time is 20 hours and the number of workers is 360. We need to find the rate at which the workers can produce widgets. Let's assume that each worker can produce one widget in one hour, so the rate is 1 widget per worker-hour.
Substituting the values, we get:
widgets = 1 x 20 x 360
widgets = 7200
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Nine children want to feed the birds they eash have 2 bags of seed. How many bags of seed are there in all
Answer: 18
Step-by-step explanation:
9 kids each have two bags
9 x 2 = 18
9 + 9 = 18
Twenty-seven times the weight in kilogram of a baby elephant increased by 400 pounds is less than the weight in kilogram of an adult elephant
The weight of the baby elephant is less than 212.59 kilograms which can be calculated using inequality.
To solve this problem, we need to use the inequality and the given information to find the weight of the baby elephant and the adult elephant. We can write the inequality as follows:
27w + 400 < a
Where w is the weight of the baby elephant in kilograms, and a is the weight of the adult elephant in kilograms. We can rearrange this inequality to get:
w < (a - 400)/27
Now, we can plug in the given information to find the weight of the baby elephant and the adult elephant. For example, if the weight of the adult elephant is 6000 kilograms, we can plug this into the inequality and get:
w < (6000 - 400)/27
w < 212.59
Similarly, we can plug in different values for the weight of the adult elephant to find the weight of the baby elephant.
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The cost of a hotel room is $50 per night plus a one-time fee of $10 for cleaning. For how many nights can the hotel room be booked if the total cost can be a maximum of $410? Write an inequality to represent the situation. Use x to represent the number of nights
Answer:
410=50x+10
Step-by-step explanation:
your total is 410 so to get there you have to know the number of nights which is x. the 10 is a one time fee so you only need that once and not per night.
Use substitution to solve
Answer:
6x-4y=18
-x-6y=7
-x-6y=7
-x=7+6y
x=-7-6y
6x-4y=18
6(x-7-6y)-4y=18
-42-40y=18
-40y=18+42
-40y=60
y=-60/40
y=-3/2
x=-7-6y
x=-7-6(-3/2)
x=-7+9
x=2
(x,y) = (2,-3/2)
2) Consider the list(9,2,5,4, 12, 10). a) Compute the mean of the list. b) Compute the standard deviation of the list. 3) The Math and Verbal SAT scores for the entering class at a certain college is summarized below: average Math SAT = 570, SD = 85 average Verbal SAT = 525, SD = 105 r=0.80 The investigator wants to use the Verbal score(x) to predict the Math score(y). a) Find the linear regression equation and use it to predict the Math score of a student who receives a 720 on the Verbal portion of the test.
b) (8 pts) If a student's Verbal percentile rank is 80%, he, his score is higher than 80% of the students taking the test, what is his percentile rank on the Math portion?
The mean of the list is 7
The standard deviation of the list is 4/69
The linear regression equation is y = 227.5 + 0.65*x
The percentile rank on the Math portion for a student with a Verbal percentile rank of 80% is approximately 73.5%.
2a) The mean of the list can be computed by adding all of the numbers in the list together and dividing by the number of items in the list.
Mean = (9+2+5+4+12+10)/6 = 42/6 = 7
2b) The standard deviation of the list can be computed by finding the difference between each number in the list and the mean, squaring these differences, finding the average of these squared differences, and then taking the square root of this average.
Standard deviation = sqrt(((9-7)^2 + (2-7)^2 + (5-7)^2 + (4-7)^2 + (12-7)^2 + (10-7)^2)/6) = sqrt(22) = 4.69
3a) The linear regression equation can be found using the formula:
y = b0 + b1*x
Where b0 is the y-intercept and b1 is the slope. The slope can be found using the formula:
b1 = r*(SDy/SDx)
Plugging in the given values:
b1 = 0.80*(85/105) = 0.65
The y-intercept can be found using the formula:
b0 = meany - b1*meanx
Plugging in the given values:
b0 = 570 - 0.65*525 = 227.5
So the linear regression equation is:
y = 227.5 + 0.65*x
To predict the Math score of a student who receives a 720 on the Verbal portion of the test, plug in x = 720 into the equation:
y = 227.5 + 0.65*720 = 693
So the predicted Math score is 693.
3b) To find the percentile rank on the Math portion for a student with a Verbal percentile rank of 80%, use the formula:
z = (x-mean)/SD
Where z is the z-score, x is the score, mean is the mean of the scores, and SD is the standard deviation of the scores.
Plugging in the given values for the Verbal scores:
z = (x-525)/105
Solving for x:
x = 105*z + 525
Since the Verbal percentile rank is 80%, the z-score is 0.84 (from a z-table). Plugging this into the equation:
x = 105*0.84 + 525 = 613.2
So the Verbal score corresponding to the 80th percentile is 613.2.
To find the Math score corresponding to this Verbal score, plug in x = 613.2 into the linear regression equation:
y = 227.5 + 0.65*613.2 = 623.6
So the Math score corresponding to the 80th percentile on the Verbal portion is 623.6.
To find the percentile rank on the Math portion for this score, use the formula:
z = (x-mean)/SD
Plugging in the given values for the Math scores:
z = (623.6-570)/85 = 0.63
Using a z-table, the corresponding percentile rank is approximately 73.5%.
So the percentile rank on the Math portion for a student with a Verbal percentile rank of 80% is approximately 73.5%.
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Help please and thank you
The expression (18)(-3)(-3) is not equivalent to others.
-7+(-3) is equivalent of the expression -7 - 3.
What is an expression?
A mathematical operation such as subtraction, addition, multiplication, or division is used to combine terms into an expression. In a mathematical expression, the following terms are used:
An absolute numerical value is referred to as a constant.
Variable: A symbol without a fixed value is referred to as a variable.
Term: A term can be made up of a single constant, a single variable, or a mix of variables and constants multiplied or divided.
Coefficient: In an expression, a coefficient is a number that is multiplied by a variable.
Take the first option:
(-9)(-3 × -6)
= (-9)(18)
= (18)(-9) [Commutative property]
= -(-18)(-9)
Apply the associative property on (-9)(-3 × -6):
(-9)(-3 × -6)
= (-9× - 3)(-6)
= (27) (-6)
= (-6)(27) [Commutative property]
The given expression is -7 - 3
Rewrite the above expression:
-7+(-3)
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Help me please it would mean a lot
Answer:
3) The commercial costs $900 to produce and $110 each times it is aired.
Step-by-step explanation:
We can determine how expensive it is to produce a commercial by looking at the function C(n)'s output when n = 0 (when the commercial hasn't been aired yet).
C(0) = 110(0) + 900
C(0) = $900
So, the cost of producing a commercial is $900.
We can see that $110 is added to the cost each time n is incremented by 1. Therefore, it costs $110 each time the commercial is aired.
We can put these two statements together to deduce that answer option 3 is correct:
The commercial costs $900 to produce and $110 each times it is aired.
Answer:
Option 3
Step-by-step explanation:
900 is a constant number that never changes. However, the value of "110n" changes every time it is aired, because 110 is multiplied by a different number. This means that $110 represents the cost of airing it each time, because if it was hypothetically aired three times, you would multiply 110 by 3, proving that it is the cost to air it, and $900 is the production cost. It also makes no sense to produce the same commercial over and over again, so the cost that is multiplied has to be the amount of times that it is aired.
The variable a is jointly proportional to the cube of b and the square of c. If a=433 when b=5 and c=7, what is the value of a when b=4 and c=4? Round your answer to two decimal places if necessary.
The value of a when b=4 and c=4 is 72.70. Rounded to two decimal places, the answer is 72.70.
The variable a is jointly proportional to the cube of b and the square of c. This means that the relationship between a, b, and c can be expressed as: a = k * b^3 * c^2, where k is a constant of proportionality.
When a=433, b=5, and c=7, we can plug these values into the equation to find the value of k:
433 = k * 5^3 * 7^2
433 = k * 125 * 49
433 = k * 6125
k = 433/6125
k = 0.07069
Now, we can use this value of k to find the value of a when b=4 and c=4:
a = k * b^3 * c^2
a = 0.07069 * 4^3 * 4^2
a = 0.07069 * 64 * 16
a = 72.70
Therefore, the value of a when b=4 and c=4 is 72.70. Rounded to two decimal places is 72.70.
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What are the other three angle measures if ∠1 has a measure of 45°?
The measures of the other three angles are: ∠2 = ∠3 = 67.5° and ∠4 = 0°.
Define an angle?An angle is a geometric figure formed by two rays that share the same endpoint called vertex. It is measured in degrees, radians or gradians and is usually denoted by the vertex letter in its center, with the endpoints labeled by two other letters or points.
Since the sum of the measures of the angles in a triangle is 180 degrees, we can use this information to find the measures of the other three angles.
If ∠1 has a measure of 45°, then we know that the sum of the measures of ∠2 and ∠3 is 135° (180° - 45°).
If the triangle is isosceles, then ∠2 and ∠3 have the same measure. Therefore, we can divide 135° by 2 to get:
∠2 = ∠3 = 67.5°
Finally, we can use the fact that the angles of a triangle add up to 180° to find the measure of ∠4:
∠4 = 180° - 45° - 67.5° - 67.5° = 0°
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Given polynomial g(x)=x^(3)+(p-4)x^(2)+(p-9)x-4, show that the polynomial g(x)divisible by(x+1)for all values of p.
The given polynomial g(x) is g(x)=x^(3)+(p-4)x^(2)+(p-9)x-4.
To show that the polynomial g(x) is divisible by (x+1) for all values of p, we must prove that g(x) has a factor of (x+1). This can be done by expanding the given polynomial and rewriting it in a form that contains the factor (x+1).
First, we expand the given polynomial g(x):
g(x)=(x^3 + (p-4)x^2 + (p-9)x - 4)
= x^3 + px^2 - 4x^2 + px - 9x - 4
= x^3 + (p-4)x^2 + (px - 9x) - 4
= x^3 + (p-4)x^2 + (p - 9)x - 4
Now we can factor out the term (x+1) from the expression:
= (x^3 + (p-4)x^2 + (p-9)x - 4)
= (x+1)(x^2 + (p-5)x + (p-9)) - 4
Finally, we can rewrite the expression as:
g(x)=(x+1)(x^2 + (p-5)x + (p-9)) - 4
This shows that the polynomial g(x) is divisible by (x+1) for all values of p, as there is a factor of (x+1) in the expression.
Therefore, we have successfully proved that the polynomial g(x) is divisible by (x+1) for all values of p.
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Consider a line segment AB, A(3, 2, 4, 1) and B(3, 2, 8, 1).
- Perform a single point perspective projection onto the z=0 plane from a center of projection at z=-2
- Then determine the vanishing points at infinity along the x, y and z-axis for this case. (Pay attention: There is no projection to z=0 plane)
A single point perspective projection onto the z=0 plane from a center of projection at z=-2 are A' = (3/4, 2/4, 0) = (0.75, 0.5, 0) for point A and B' = (3/8, 2/8, 0) = (0.375, 0.25, 0) for point B. There are no vanishing points at infinity along the x, y, and z-axis for this case.
To perform a single point perspective projection onto the z=0 plane from a center of projection at z=-2, we need to use the perspective projection formula:
P' = (x/z, y/z, 0)
For point A(3, 2, 4, 1), the projected point A' will be:
A' = (3/4, 2/4, 0) = (0.75, 0.5, 0)
For point B(3, 2, 8, 1), the projected point B' will be:
B' = (3/8, 2/8, 0) = (0.375, 0.25, 0)
Now, to determine the vanishing points at infinity along the x, y, and z-axis, we need to find the points where the line segment AB intersects the planes at infinity along each axis.
For the x-axis, the plane at infinity is x=∞. Since the line segment AB is parallel to the x-axis, it will never intersect this plane, and therefore there is no vanishing point along the x-axis.
For the y-axis, the plane at infinity is y=∞. Similarly, the line segment AB is parallel to the y-axis and will never intersect this plane, so there is no vanishing point along the y-axis.
For the z-axis, the plane at infinity is z=∞. The line segment AB is not parallel to the z-axis, so it will intersect this plane at a point with coordinates (x, y, ∞). To find this point, we can use the equation of the line segment AB:
(x - 3)/(3 - 3) = (y - 2)/(2 - 2) = (z - 4)/(8 - 4)
Solving for z=∞, we get:
(x - 3)/(3 - 3) = (y - 2)/(2 - 2) = (∞ - 4)/(8 - 4) = ∞
Since the denominators are all equal to zero, this equation is undefined, and therefore there is no vanishing point along the z-axis.
In conclusion, there are no vanishing points at infinity along the x, y, and z-axis for this case.
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An online game company sells GTA 6 for $28. 19. An other online game company offers $21. 39 with DLC included. Which company has the better deal?
This is actually one my homework question-
Answer: The other game companies offer
Step-by-step explanation: Pretty much self-explanatory.
Directions
Math-Alg.F-IF.6 Standard Review (copy)
1
The function f(x) contains the set of points {(-2,4), (-1,8), (0, 12), (1, 15), (2, 18)} over the interval [-2,2].
What is the average rate of change of f(x) over the interval [0, 2]?
Check the picture below.
[tex]\begin{array}{llll} f(x)~from\\\\ x_1 ~~ to ~~ x_2 \end{array}~\hfill slope = m \implies \cfrac{ \stackrel{rise}{f(x_2) - f(x_1)}}{ \underset{run}{x_2 - x_1}}\impliedby \begin{array}{llll} average~rate\\ of~change \end{array} \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} x_1=0\\ x_2=2 \end{cases}\implies \cfrac{f(2)-f(0)}{2 - 0}\implies \cfrac{18-12}{2}\implies \cfrac{6}{2}\implies \text{\LARGE 3}[/tex]
£300 in the ratio of 10:20
Answer:
To divide £300 in the ratio of 10:20, we need to first add the two parts of the ratio to find the total number of parts:
10 + 20 = 30
This means that the ratio can be expressed as 10/30 and 20/30.
Next, we can use these ratios to find the amount of money for each part of the ratio:
10/30 x £300 = £100
20/30 x £300 = £200
Therefore, the amount of money for the parts of the ratio 10:20 would be £100 and £200 respectively.
Find the Values of the variables for each quadrilateral
The values of the variables are y =50 and x = 130
How to determine the values of the variablesFrom the question, we have the following parameters that can be used in our computation:
The isosceles trapezoid
An isosceles trapezoid is a quadrilateral with two parallel sides of equal length and two non-parallel sides of unequal length.
This means that the base angles are congruent
Using the above as a guide, we have the following for the variable y
y = 50
Solving further, we have the following equation for variable x
x + 50 = 180
Evaluate the equation
x = 130
Hence, the value of x is 130
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1.Solve the system of equations [8] 2x + 6y + 62 = 6 2x + 7y + z = 7 2x + 7y + 72 = 8 - using the inverse of the coefficient matrix.(Compute inverse by inversion algorithm)
The solution to the system of equations is:
x = -6.552
y = -1.655
z = 1.276
To solve the system of equations using the inverse of the coefficient matrix, we will first need to find the inverse of the coefficient matrix using the inversion algorithm. The coefficient matrix is:
A = [[2, 6, 6], [2, 7, 1], [2, 7, 7]]
To find the inverse of A, we will use the inversion algorithm:
1. Find the determinant of A:
|A| = 2(7*7 - 1*7) - 6(2*7 - 1*2) + 6(2*7 - 2*7) = 14 - 72 + 0 = -58
2. Find the matrix of minors:
M = [[(7*7 - 1*7), -(2*7 - 1*2), (2*7 - 2*7)], [-(6*7 - 6*1), (2*7 - 6*2), -(2*6 - 6*2)], [(6*1 - 7*6), -(2*1 - 7*2), (2*6 - 7*6)]]
M = [[42, -12, 0], [-36, 2, -12], [-36, 12, -30]]
3. Find the matrix of cofactors:
C = [[42, 12, 0], [36, 2, 12], [-36, -12, -30]]
4. Find the adjugate matrix:
adj(A) = [[42, 36, -36], [12, 2, -12], [0, 12, -30]]
5. Find the inverse of A:
A^-1 = (1/|A|)adj(A) = (1/-58)[[42, 36, -36], [12, 2, -12], [0, 12, -30]]
A^-1 = [[-0.724, -0.621, 0.621], [-0.207, -0.034, 0.207], [0, -0.207, 0.517]]
Now, we can use the inverse of the coefficient matrix to solve the system of equations. The system of equations can be written in matrix form as:
AX = B
Where A is the coefficient matrix, X is the matrix of unknowns, and B is the matrix of constants:
A = [[2, 6, 6], [2, 7, 1], [2, 7, 7]]
X = [[x], [y], [z]]
B = [[6], [7], [8]]
Multiplying both sides of the equation by the inverse of A, we get:
A^-1AX = A^-1B
IX = A^-1B
X = A^-1B
Substituting the values of A^-1 and B, we get:
X = [[-0.724, -0.621, 0.621], [-0.207, -0.034, 0.207], [0, -0.207, 0.517]] * [[6], [7], [8]]
X = [[-6.552], [-1.655], [1.276]]
Therefore, the solution to the system of equations is:
x = -6.552
y = -1.655
z = 1.276
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Find The Amplitude, Asymptotes, Complete Period, Period, And Phase Shift For Each Of The Following Trigonometric Functions If Exists. A. \( F(X)=4 \Sin [5(X-\Pi)] \) B. \( G(X)=-\Sec \Left[3\Left(X-\Frac{\Pi}{2}
A. Amplitude: 4, Asymptotes: None, Complete Period: [tex]\(\frac{2\pi}{5}\)[/tex], Period: [tex]\(2\pi/5\)[/tex], Phase Shift: [tex]\(\frac{\pi}{5}\)[/tex].
B. Amplitude: 1, Asymptotes: [tex]\(x=\frac{\pi}{2}+\frac{2\pi}{3}n\)[/tex], Complete Period: [tex]\frac{2\pi}{3}\)[/tex], Period: [tex]\(2\pi/3\)[/tex], Phase Shift: [tex]\(\frac{\pi}{6}\)[/tex].
To find the amplitude, asymptotes, complete period, period, and phase shift for each of the given trigonometric functions, we need to use the standard form of the trigonometric functions:[tex]\[f(x)=A\sin(Bx+C)+D\][/tex] and [tex]\[g(x)=A\sec(Bx+C)+D\][/tex]
For function f(x), we have:
A = 4, B = 5, C = -π, and D = 0
The amplitude is |A| = |4| = 4
The period is [tex]\(\frac{2\pi}{|B|}[/tex] = [tex]\frac{2\pi}{5}\)[/tex]
The phase shift is [tex]\(-\frac{C}{B}[/tex] = [tex]-\frac{-\pi}{5}[/tex] = [tex]\frac{\pi}{5}\)[/tex]
There are no asymptotes for the sine function.
For function g(x), we have:
A = -1, B = 3, C = -π/2, and D = 0
The amplitude is |A| = |-1| = 1
The period is [tex]\(\frac{2\pi}{|B|}[/tex] = [tex]\frac{2\pi}{3}\)[/tex]
The phase shift is [tex]\(-\frac{C}{B}[/tex] = [tex]-\frac{-\pi/2}{3}[/tex] = [tex]\frac{\pi}{6}\)[/tex]
The asymptotes occur when the cosine function is equal to zero, so the asymptotes are at [tex]\(x=\frac{\pi}{2}+\frac{2\pi}{3}n\)[/tex] , where n is an integer.
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A book sold 42800 copies in its first month of release. Suppose this represents 7.3 of the number of copies sold to date. How many copies have been sold to date?
The number of copies sold in total is 586,301
What is percentage?A percentage is a portion of a whole expressed as a number between 0 and 100 rather than as a fraction.
Given that, a book sold 42800 copies in its first month of release, this represents 7.3 of the number of copies sold to date, we need to find the number of the copies have been sold to date,
Let the number of copies sold in total be x,
Using the concept of percentage,
7.3 % of x = 42800
7.3 / 100 of x = 42800
x = 100/7.3 (42800)
x = 586,301
Hence, the number of copies sold in total is 586,301
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What are the solutions of the equation 0=x^2-9x+8
The solutions of the equation 0=x^2-9x+8 are x = 8 and x = 1
How to determine the solutions of the equationFrom the question, we have the following parameters that can be used in our computation:
0=x^2-9x+8
Rewrite as
x^2 - 9x + 8 = 0
Expand the equation
So, we have the following representation
x^2 - 8x - x + 8 = 0
When the equation is factorized, we have
(x - 8)(x - 1) = 0
This gives
x - 8 = 0 and x - 1 = 0
Evaluate
x = 8 and x = 1
Hence, the solutions are x = 8 and x = 1
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if l || m, find the value of x
Answer:
I need a graph to answer this question
Step-by-step explanation:
Quadratic Functions:
Evaluate the function fx= -4x2+6x-1 to find
f-1
Using the same function, when is fx=0
For function fx= -4x2+6x-1
f(-1) = -11 fx=0 when x = (3+√5)/4 and x = (3-√5)/4.To find f(-1), we need to plug in -1 for x in the function and simplify:
f(-1) = -4(-1)2+6(-1)-1
f(-1) = -4+(-6)-1
f(-1) = -11
To find when fx=0, we need to set the function equal to 0 and solve for x: -4x2+6x-1=0
We can use the quadratic formula to solve for x:
x = (-b ± √(b2-4ac))/(2a)
x = (-(6) ± √((6)2-4(-4)(-1)))/(2(-4))
x = (-6 ± √(36-16))/(-8)
x = (-6 ± √20)/(-8)
x = (-6 ± 2√5)/(-8)
x = (3 ± √5)/4
So, the two values of x that make fx=0 are (3+√5)/4 and (3-√5)/4.
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Find the exact value of each expression. (a) cos 165° (b) cos 80° cos 20° + sin 80° sin 20°
(a) We can use the identity cos(180° - θ) = -cos(θ) to rewrite cos(165°) as cos(180° - 15°) cos(165°) = cos(180° - 15°) = -cos(15°) To find cos(15°),
we can use the half-angle formula for cosine: cos(15°) = cos(30°/2) = sqrt((1 + cos(30°))/2) = sqrt((1 + sqrt(3)/2)/2) = (sqrt(2) + sqrt(6))/4
Therefore, cos(165°) = -cos(15°) = -(sqrt(2) + sqrt(6))/4 (b) Using the product-to-sum identity, we have cos(80°)cos(20°) + sin(80°)sin(20°) = cos(80° - 20°) = cos(60°) = 1/2 Therefore, cos(80°)cos(20°) + sin(80°)sin(20°) = 1/2.
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What is the value of x?
Answer:
x = 106 degrees
Step-by-step explanation:
we can create a triangle with angles x, 30, and 26+18.
that means x + 30 + (26 + 18) = 180.
move the constants to one side to get x = 180 - 30 - (26 + 18) = 106